Velocity of a particle when acceleration based on displacement

AI Thread Summary
The discussion revolves around determining the velocity of a particle when its acceleration is based on displacement. The user has successfully calculated the speed but struggles with finding the direction of the velocity. It is suggested that the solution may require vector integration or a deeper understanding of vector mathematics. The importance of having separate equations for each vector component (x, y, z) is emphasized for a complete answer. Overall, the user seeks guidance on how to incorporate direction into their calculations.
ivanallen
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Homework Statement


[PLAIN]http://img690.imageshack.us/img690/5817/problem001.jpg

Homework Equations


Chain rule : dv/dt=dv/dr*dr/dt
Integration

The Attempt at a Solution


I can only find the speed (the magnitude of the velocity), that is
[PLAIN]http://img268.imageshack.us/img268/4996/95620213.jpg

I have no idea how to consider its direction. :frown:
Does it involve vector integration or higher mathematic knowledge?
Help me, please, I'm dying to know the answer, thank you. :!)
 
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Where is the problem?
 
Problem is I can't find the direction of the velocity of this paricle, the only thing I can find is its magnitude.
In the question above, it asks for the velocity, so only magnitude is not enough.
Please show me how to find its direction. Thanks.
 
You have a vector equation, one equation for each component, x, y, z. ehild
 
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